Improvement in reversible center-pinion for watches



J.. V. MATHIVET.

Watch Pinion.

110.107,273. Patented sept. 13, 1870.

N.PETERS, FHOT0L1THOGE AAAAAAAAAAAAAAAAAAA C4 taint gaat @met enthllt.

- Let-ters Patent No. 107,273, (lated iS'cptcmhcr 13, 1870.

IMPROVEMENT IN REVERSIBLE CENTER-PINION FOR WATCHES.

lhe Schedule referred -to in these Letters Patent and making part of the same To all whom it may concern Be it known that -I, JEAN V. MATHIVET, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented anew and useful Improved Reversible Center-liuion for Watches; and I do hereby'deelare the following to be a full, clear, and exact description thereof, suilicieut to `enable those skilled in the art to which my invention appertains to fully understand and to make and use the same, reference being had `to' the accompanying drawing making part ot' this specification, in which- Figure 1 is a perspective view. Figure 2 is a detached view of the wheel; Figure 3 is a detached view ot' the pinion and ratchet-plate.

Like letters of reference indicate like parts in the several figures.

My invention consists in the provision of the loose pinion with a ratchet-plate, having teeth formed on itsperiphery, in such a manner that said teeth shall A represents a center-wheel, having a fixed shaft,

B is a hollow pinion, to the lower side of which is firmly attached, by riveting or other suitable means, a disk, c, of metal or its equivalent, the periphery ot' which is formed into any suitable number' oi ratchetteeth by cutting slits, d (hin thev edge of the disk, from the outside toward the center far enough to allow the metal. to be bent or turned down on the same side ot' each slit, to form the ratchet-teeth, which teeth, when the pinion is secured in its place onl the shaft otl the wheel A, strike against the arms of the wheel, and prevent its turning forward; but the elasticity ot' the teeth and disk allow the pinion a free movement in the reverse direction by rising up and passing over the arms of the wheel.

By t-he use ot' this improvement, the teeth are sure to hold against the arms of the wheel, while, if the main-spring becomes loose by unhooking or by breaking, the pinion will have a' free reverse motion.

Having thus described Iny invention,

What I desire to secure by Letters Patent islhe ratchet-plate c, when formed with teeth d, in the manner described, and attached to the pinion li, as and for the purpose specified.

JEAN V. MATHIVET.

Witnesses:

Guo; W. Tmm'ms, Guo. A. Komm. 

